Generally, a quitclaim is a formal renunciation of a legal claim against some other person, or of a right to land. A person who quitclaims renounces or relinquishes a claim to some legal right, or transfers a legal interest in land. Originally a common law concept dating back to Medieval England, the expression is in modern times mostly restricted to North American law, where it often refers specifically to a transfer of ownership or some other interest in real property.

Commonly, quitclaims are used in situations where a grantor transfers any interest they have in property to a recipient (the grantee) but without offering any guarantee as to the extent of that interest. There may even be no guarantee that the grantor owns the property or has any legal interest in it whatsoever. Specific situations where a precise definition of the grantor's interest (if any) may be unnecessary include property transferred as a gift, to a family member, or into a business entity.

The legal instrument by which the transfer is effected may be known as a quitclaim deed or quitclaim agreement. Details of the instrument itself, and the typical circumstances of use, vary by U.S. state.